A display processor and computer-implemented method are provided for processing three-dimensional [3D] image data for display on a 3D display. The 3D display is arranged for emitting a series of views of the 3D image data which enables stereoscopic viewing of the 3D image data at multiple viewing positions. The series of views may be displayed on the 3D display using overscan. The degree of overscan may be determined as a function of one or more depth range parameters, the one or more depth range parameters characterizing, at least in part, a degree of depth perceived by a viewer when the series of views is displayed on the 3D display.
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2. The display processor according to claim 1, wherein the depth-related data includes depth-related values mapped to parallax shift values by which image data of the 2D image data is locally displaced across the series of views.
3. The display processor according to claim 1, wherein the mapping comprises a gain parameter and an offset parameter.
4. The display processor according to claim 3, wherein the display processor is configured to determine the degree of overscan as a function of a multiplicative product of a nominal overscan value and the gain parameter.
5. The display processor according to claim 4, wherein the display processor is configured to determine the degree of overscan as a sum of said multiplicative product and an absolute value of the offset parameter.
A display processor is designed to adjust image display parameters to compensate for overscan, a common issue in display systems where the visible portion of an image is smaller than the full image due to display hardware limitations. The processor calculates the degree of overscan by combining a multiplicative product of a scaling factor and a base overscan value with an absolute value of an offset parameter. This ensures precise control over the visible area of the display, allowing for consistent image presentation across different devices. The processor may also adjust the image position and scaling to maintain proper alignment and aspect ratio, compensating for variations in display hardware. The offset parameter provides fine-tuning to further refine the overscan correction, ensuring accurate display of the intended image content. This approach improves visual consistency and reduces distortion in displayed images, addressing the problem of inconsistent overscan handling in various display systems.
6. The display processor according to claim 1, wherein the one or more depth range parameters comprise one or more content parameters which are indicative of a depth range of the content of the 3D image data.
A display processor is configured to process 3D image data for display on a display device. The processor determines a depth range of the 3D image data by analyzing one or more depth range parameters. These parameters include content parameters that specify the depth range of the content within the 3D image data. The processor uses these parameters to adjust the display settings, such as focal planes or depth rendering, to optimize the viewing experience. The depth range parameters may be derived from metadata embedded in the 3D image data or calculated dynamically based on the image content. The processor ensures that the displayed 3D content is rendered within an optimal depth range, enhancing clarity and reducing visual discomfort. This approach allows for efficient depth management in 3D displays, particularly in applications like virtual reality, augmented reality, and 3D television, where accurate depth perception is critical. The system dynamically adapts to varying depth ranges in the content, ensuring consistent and comfortable viewing across different scenes.
7. The display processor according to claim 6, wherein the one or more content parameters represent a measurement of the depth range of the content of the 3D image data.
8. The display processor according to claim 7, wherein the one or more content parameters are indicative of the depth range within an image and/or, if the 3D image data represents a 3D video, the depth range over multiple images.
9. The display processor according to claim 6, wherein the one or more content parameters are indicative of the depth range within a video shot.
10. A 3D display comprising the display processor according to claim 1.
A 3D display system addresses the challenge of providing immersive, depth-perceptible visual content without requiring specialized glasses or headgear. The system includes a display processor designed to generate and process 3D image data, enabling the display to render depth information in real-time. The processor integrates algorithms for depth mapping, parallax correction, and dynamic view synthesis, ensuring accurate depth perception across multiple viewing angles. The display itself incorporates a high-resolution panel capable of modulating light to create the illusion of depth, using techniques such as lenticular lenses, parallax barriers, or light-field modulation. The system may also include sensors to track viewer position, allowing the display to adjust the 3D effect dynamically for optimal viewing. By combining advanced image processing with adaptive display technologies, the system delivers a glasses-free 3D viewing experience suitable for applications in entertainment, medical imaging, and virtual reality. The design ensures compatibility with existing content formats while enhancing visual realism and reducing eye strain.
11. A non-transitory computer readable medium comprising 3D image data and metadata associated with the 3D image data, the metadata representing the one or more content parameters as defined by claim 6.
13. A non-transitory computer readable medium comprising data representing instructions arranged to cause a processor system to perform the method according to claim 12.
14. The display processor according to claim 1, wherein the display processor is configured to determine the degree of overscan as a function of a multiplicative product of a nominal overscan value and a gain parameter controlling a magnitude of depth differences within the 3D image data.
This invention relates to display processing for 3D image data, specifically addressing the challenge of optimizing overscan adjustments to enhance depth perception while maintaining visual quality. Overscan refers to the intentional scaling of an image beyond its original dimensions to improve edge visibility or depth effects. The invention describes a display processor that dynamically calculates the degree of overscan based on a combination of a predefined nominal overscan value and a gain parameter. The gain parameter modulates the magnitude of depth differences within the 3D image data, allowing the overscan to be adjusted proportionally to the perceived depth variations. This approach ensures that overscan is not excessive or insufficient, preserving image clarity while enhancing the 3D viewing experience. The processor may also include features for analyzing depth data, applying scaling transformations, and compensating for display characteristics to further refine the overscan effect. The invention is particularly useful in applications where precise depth rendering is critical, such as virtual reality, medical imaging, or high-end gaming displays. By dynamically adjusting overscan based on depth content, the system avoids static overscan settings that may distort shallow or flat images while ensuring optimal depth rendering for complex 3D scenes.
16. The display processor according to claim 1, wherein the mapping includes a gain parameter and an offset parameter which are applied to a depth value when mapping the depth value to a parallax shift value during rendering of the 3D image data.
17. The display processor according to claim 1, wherein the degree of the overscan for displaying the 3D image data on the 3D display is changed dynamically so that the degree of overscan is increased with increase in the range of depth and decreased with a decrease in the range of depth.
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January 23, 2019
November 8, 2022
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